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Grade 12Zoology

how many double circulations are completed by heart in 1min

Profile image of prateek
8 Years agoGrade 12
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Profile image of DEBAPRIYA MONDAL
8 Years ago
Average 72 ...as heart cycle is a duration of 0.8 sec...so in one minute 60/0.8=72 .in every cycle there is double circulation ..as Blood goes to lungs is a circulation and to other body parts is another circulation